OSCTUN: FRC OSCILLATOR TUNING REGISTER
參數(shù)資料
型號(hào): AT89C5115-TISUM
廠商: Atmel
文件頁數(shù): 15/113頁
文件大小: 0K
描述: IC 8051 MCU FLASH 16K 28SOIC
產(chǎn)品培訓(xùn)模塊: MCU Product Line Introduction
標(biāo)準(zhǔn)包裝: 972
系列: 89C
核心處理器: 8051
芯體尺寸: 8-位
速度: 40MHz
連通性: UART/USART
外圍設(shè)備: POR,PWM,WDT
輸入/輸出數(shù): 20
程序存儲(chǔ)器容量: 16KB(16K x 8)
程序存儲(chǔ)器類型: 閃存
EEPROM 大小: 2K x 8
RAM 容量: 512 x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 28-SOIC(0.400",10.16mm 寬)
包裝: 管件
配用: AT89OCD-01-ND - USB EMULATOR FOR AT8XC51 MCU
2007-2011 Microchip Technology Inc.
DS70265E-page 111
dsPIC33FJ12MC201/202
REGISTER 8-4:
OSCTUN: FRC OSCILLATOR TUNING REGISTER(2)
U-0
bit 15
bit 8
U-0
R/W-0
TUN<5:0>(1)
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-6
Unimplemented:
Read as ‘0’
bit 5-0
TUN<5:0>:
FRC Oscillator Tuning bits(1)
011111
= Center frequency +11.625% (8.23 MHz)
011110
= Center frequency +11.25% (8.20 MHz)
000001
= Center frequency +0.375% (7.40 MHz)
000000
= Center frequency (7.37 MHz nominal)
111111
= Center frequency -0.375% (7.345 MHz)
100001
= Center frequency -11.625% (6.52 MHz)
100000
= Center frequency -12% (6.49 MHz)
Note 1:
OSCTUN functionality has been provided to help customers compensate for temperature effects on the
FRC frequency over a wide range of temperatures. The tuning step size is an approximation and is neither
characterized nor tested.
2:
This register is reset only on a Power-on Reset (POR).
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